“Calculus with Divided Powers.” Notes on Crystalline Cohomology. (MN-21), by Pierre Berthelot and Arthur Ogus, Princeton University Press, Princeton, New Jersey, 1978, pp. 4.1–4.13, www.jstor.org/stable/j.ctt130hk6f.7. Accessed 2 Aug. 2021.
Berthelot, P., & Ogus, A. (1978). Calculus with Divided Powers. In Notes on Crystalline Cohomology. (MN-21) (pp. 4.1-4.13). Princeton, New Jersey: Princeton University Press. Retrieved August 2, 2021, from http://www.jstor.org/stable/j.ctt130hk6f.7
Berthelot, Pierre, and Arthur Ogus. "Calculus with Divided Powers." In Notes on Crystalline Cohomology. (MN-21), 4.1-.13. Princeton, New Jersey: Princeton University Press, 1978. Accessed August 2, 2021. http://www.jstor.org/stable/j.ctt130hk6f.7.
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